>> > Total: 71 clockcicles. Conclusion: you're right, it's not possible to
use
>> > 1.2Mb or 1.44Mb disks with Z80 at 3.57MHz. It's BAD!
>>
>> Too bad!
>>
>> > Then, there's still a chance only for Turbo-R.
>>
>> And 7.16 MHz MSX2!
>
>Yes, and why not 7.16MHz MSX1? BTW, how does a 7.16MHz works? I didn't
>change the main clock of my MSX2 because I know that V9938 won't work.
When accessing the I/O-ports (there's a pin on the Z80 which indicates it)
the board switches the processor back to 3.5 MHz... Later, 'smart'
7MHz-boards (called Advanced 7MHz) appeared, which only switched back to
3.5MHz when there was VDP I/O. This way, SCSI, Memory, MoonSound etc. I/O is
all done at maximum speed.
I'd like to have the last one too (or better: 10MHz!) but I don't know where
to get it...
~Grauw
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